body,p,h3{
    font-family: 12px/1.5 Impact, Haettenschweiler, 'Arial Narrow Bold', sans-serif;
    margin: 0;
    padding: 0;
}
body{
    background-color: #f5f5f5;
}
h3{
    font-weight: 400;
}
/* a的重置 */
a{
    text-decoration: none;
    color: #333;
    font-size: 12px;
}